Novel membranes based on cellulose for gas separation and green method for their preparing

Журнал Белорусского государственного университета: Химия

Vladimir V. Teplyakov¹  Daria A. Syrtsova¹  Irina M. Kimlenka²  Valeryia B. Filistovich²  Tatsiana A. Savitskaya²  Svetlana E. Makarevich³  Dzmitry D. Hrynshpan³ 

[1] A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninskii Avenue, Moscow 119991, Russia;Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus;Research Institute for Physical Chemical Problems, Belarusian State University, 14 Lieninhradskaja Street, Minsk 220006, Belarus;

关键词: cellulose;    chitosan;    orthophosphoric acid;    composite membranes;    gas separation;    oxygen;    nitrogen;    methane;    carbon dioxide;    fabric support;    two-layer film;   

DOI  :  10.33581/2520-257X-2019-1-66-77

来源: DOAJ

【 摘 要 】

A «green» method of obtaining gas separation composite membranes from cellulose solutions and its mixtures with chitosan in orthophosphoric acid is proposed for industrial use, and differs from the viscose method of producing cellophane and other known methods for producing cellulose gas separation membranes without gaseous emissions and wastewater. It is shown that new composite cellulose membranes on a viscose fabric substrate are characterized by high productivity and selectivity for O2/ N2 pairs, comparable to the values obtained for known membranes made of synthetic polymers, as well as increased mechanical strength. The developed composite membranes demonstrate an inverse selectivity for the CH4/CO2 pair, which is not typical for gas separation membranes described in the literature with cellulose-based selective layers.

【 授权许可】

Unknown